.page-home {
  position: relative;
  overflow-x: clip;
}

@media (min-width: 1080px) {
  .page-home > section::after {
    content: "";
    position: absolute;
    top: 0;
    bottom: 0;
    right: max(var(--gutter), calc((100% - var(--shell-max)) / 2));
    width: 1px;
    background: repeating-linear-gradient(180deg, rgba(30, 127, 168, .26) 0 6px, transparent 6px 15px);
    pointer-events: none;
  }
  .page-home > .section--dark::after {
    background: repeating-linear-gradient(180deg, rgba(156, 207, 227, .38) 0 6px, transparent 6px 15px);
  }
}

.page-home .section {
  position: relative;
  padding: clamp(3.5rem, 8vw, 6rem) 0;
}

.page-home .section-head {
  margin-bottom: clamp(1.8rem, 3.5vw, 2.75rem);
}

/* ---------- 首屏 ---------- */

.page-home .hero {
  position: relative;
  padding: clamp(2.2rem, 6vw, 4.2rem) 0 clamp(3.2rem, 7vw, 5.6rem);
  background:
    radial-gradient(120% 90% at 84% 6%, rgba(30, 127, 168, .16), transparent 58%),
    linear-gradient(180deg, var(--salt) 0%, #EDF4F8 100%);
  overflow: hidden;
}

.page-home .hero-contours {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: 58%;
  pointer-events: none;
  z-index: 0;
}

.page-home .hero-wrap {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(2rem, 4vw, 3rem);
  align-items: start;
}

.page-home .hero-title {
  margin: .8rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 5.4vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -.02em;
  color: var(--ink-900);
}

.page-home .hero-title-num {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--flag);
  letter-spacing: -.01em;
}

.page-home .hero-lede {
  margin: 1.3rem 0 0;
  max-width: 34em;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--text);
}

.page-home .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 1.6rem 0 0;
}

.page-home .hero-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0;
  margin: 2.2rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px solid var(--mist);
}

.page-home .fact {
  padding: .55rem 0;
}

.page-home .fact dt {
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--lake-dark);
}

.page-home .fact dd {
  margin: .3rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--ink-900);
}

.page-home .hero-collage {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(.7rem, 1.6vw, 1.15rem);
  align-items: start;
}

.page-home .collage-photo {
  grid-column: 1 / -1;
  margin: 0;
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  background: var(--mist);
}

.page-home .collage-photo img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .collage-version {
  grid-column: 1 / 2;
  padding: 1.15rem 1.15rem 1.25rem;
  border-radius: var(--radius-m);
  background: linear-gradient(150deg, rgba(20, 57, 90, .96), rgba(11, 27, 43, .96));
  border: 1px solid rgba(156, 207, 227, .28);
  color: #EAF3F8;
}

.page-home .collage-version .legend-tag {
  color: var(--lake-300);
}

.page-home .collage-version-name {
  margin: .5rem 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3.4vw, 2.1rem);
  line-height: 1.1;
  color: #FFFFFF;
}

.page-home .collage-version-meta {
  margin: .5rem 0 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--lake-300);
}

.page-home .collage-entry {
  grid-column: 2 / 3;
  padding: 1.15rem 1.15rem 1.25rem;
  border-radius: var(--radius-m);
  background: var(--salt);
  border: 1px solid var(--mist);
  border-left: 3px solid var(--flag);
}

.page-home .collage-entry-label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--amber-ink);
}

.page-home .collage-entry-step {
  display: flex;
  align-items: baseline;
  gap: .5rem;
  margin: .6rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--ink-900);
}

.page-home .collage-entry-step .num-display {
  color: var(--flag);
}

.page-home .collage-entry-link {
  display: inline-block;
  margin-top: .7rem;
  font-size: .875rem;
  font-weight: 600;
  color: var(--lake-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 127, 168, .4);
}

.page-home .collage-entry-link:hover {
  color: var(--flag-dark);
  border-bottom-color: var(--flag);
}

/* ---------- 四类线路 ---------- */

.page-home .lines {
  background: var(--salt);
}

.page-home .lines-banner {
  margin: 0 0 clamp(1.8rem, 3.6vw, 2.8rem);
  border-radius: var(--radius-m);
  overflow: hidden;
  background: var(--mist);
}

.page-home .lines-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .lines-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 3.5vw, 2.75rem);
}

.page-home .lines-map {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--mist);
}

.page-home .lines-map img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .lines-map figcaption {
  padding: .7rem 1rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--lake-dark);
  background: rgba(156, 207, 227, .22);
}

.page-home .lines-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-home .line-item {
  display: grid;
  grid-template-columns: 3.1rem minmax(0, 1fr);
  gap: 0 .9rem;
  padding: 1.35rem 0;
  border-top: 1px solid var(--mist);
}

.page-home .line-item:last-child {
  border-bottom: 1px solid var(--mist);
}

.page-home .line-index {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1;
  color: var(--lake);
  padding-top: .15rem;
}

.page-home .line-name {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.275rem;
  color: var(--ink-900);
}

.page-home .line-count {
  margin: .35rem 0 0;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--amber-ink);
}

.page-home .line-count strong {
  font-size: 1.35rem;
  color: var(--flag);
}

.page-home .line-text {
  margin: .55rem 0 0;
  font-size: .9375rem;
  line-height: 1.7;
  color: var(--text);
}

/* ---------- 三步进入 ---------- */

.page-home .steps {
  background: linear-gradient(180deg, #F1F7FA 0%, var(--salt) 100%);
}

.page-home .steps-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.6rem, 3.5vw, 2.6rem);
  align-items: start;
}

.page-home .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
  counter-reset: step;
}

.page-home .step-card {
  position: relative;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: .3rem 1rem;
  padding: 1.4rem 1.4rem 1.5rem;
  background: #FFFFFF;
  border: 1px solid var(--mist);
  border-radius: var(--radius-m);
  box-shadow: var(--shadow-card);
}

.page-home .step-index {
  grid-row: span 2;
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1;
  color: var(--flag);
}

.page-home .step-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink-900);
}

.page-home .step-text {
  margin: .45rem 0 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--text);
}

.page-home .steps-phone {
  margin: 0;
  border-radius: var(--radius-m);
  overflow: hidden;
  border: 1px solid var(--mist);
  background: var(--mist);
}

.page-home .steps-phone img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-home .steps-phone figcaption {
  padding: .7rem 1rem;
  font-family: var(--font-mono);
  font-size: .6875rem;
  letter-spacing: .08em;
  color: var(--lake-dark);
  background: rgba(156, 207, 227, .22);
}

/* ---------- 本季更新 ---------- */

.page-home .season {
  background: linear-gradient(155deg, var(--ink-900) 0%, var(--ink-700) 100%);
  color: #E7F0F6;
}

.page-home .season .section-title {
  color: #FFFFFF;
}

.page-home .season .section-lede {
  color: rgba(231, 240, 246, .8);
}

.page-home .season .legend-tag {
  color: var(--lake-300);
}

.page-home .season-folds {
  border-top: 1px solid rgba(156, 207, 227, .26);
}

.page-home .season-folds .fold {
  border-bottom: 1px solid rgba(156, 207, 227, .26);
}

.page-home .season-folds .fold-head {
  width: 100%;
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr) 1.5rem;
  align-items: center;
  gap: .9rem;
  padding: 1.25rem 0;
  background: none;
  border: 0;
  text-align: left;
  cursor: pointer;
  color: #E7F0F6;
}

.page-home .season-folds .fold-index {
  font-family: var(--font-mono);
  font-size: .875rem;
  letter-spacing: .06em;
  color: var(--amber);
}

.page-home .season-folds .fold-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.05rem, 2.4vw, 1.35rem);
  color: #FFFFFF;
}

.page-home .season-folds .fold-mark {
  position: relative;
  width: 1rem;
  height: 1rem;
  justify-self: end;
}

.page-home .season-folds .fold-mark::before,
.page-home .season-folds .fold-mark::after {
  content: "";
  position: absolute;
  background: var(--lake-300);
  transition: transform .3s var(--ease), opacity .3s var(--ease);
}

.page-home .season-folds .fold-mark::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 1.5px;
  transform: translateY(-50%);
}

.page-home .season-folds .fold-mark::after {
  left: 50%;
  top: 0;
  width: 1.5px;
  height: 100%;
  transform: translateX(-50%);
}

.page-home .season-folds .fold[data-open] .fold-mark::after,
.page-home .season-folds .fold-head[aria-expanded="true"] .fold-mark::after {
  transform: translateX(-50%) scaleY(0);
  opacity: 0;
}

.page-home .season-folds .fold-head:hover .fold-title {
  color: var(--lake-300);
}

.page-home .season-folds .fold-body {
  padding: 0 0 1.5rem;
}

.page-home .season-folds .fold-inner {
  padding-left: 3.9rem;
  max-width: 44em;
}

.page-home .season-folds .fold-inner p {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.78;
  color: rgba(231, 240, 246, .82);
}

.page-home .season-cta {
  margin: clamp(1.8rem, 3.4vw, 2.6rem) 0 0;
}

/* ---------- 工具直达 ---------- */

.page-home .tools {
  background: var(--salt);
}

.page-home .tools-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

.page-home .tool-card {
  position: relative;
  padding: 1.6rem 1.5rem 1.7rem;
  background: #FFFFFF;
  border: 1px solid var(--mist);
  border-radius: var(--radius-m);
  transition: transform .3s var(--ease), box-shadow .3s var(--ease);
}

.page-home .tool-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card);
}

.page-home .tool-card--primary {
  background: linear-gradient(150deg, #EAF4F9 0%, #FFFFFF 68%);
  border-color: rgba(30, 127, 168, .3);
}

.page-home .tool-index {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--lake-300);
}

.page-home .tool-card--primary .tool-index {
  color: var(--flag);
}

.page-home .tool-title {
  margin: .8rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  color: var(--ink-900);
}

.page-home .tool-text {
  margin: .6rem 0 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--text);
}

.page-home .tool-link {
  display: inline-block;
  margin-top: 1.1rem;
  font-family: var(--font-mono);
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--lake-dark);
  text-decoration: none;
  border-bottom: 1px dashed rgba(30, 127, 168, .5);
}

.page-home .tool-link:hover {
  color: var(--flag-dark);
  border-bottom-color: var(--flag);
}

/* ---------- 服务与响应 ---------- */

.page-home .support {
  background: linear-gradient(200deg, var(--ink-900) 0%, #10304C 100%);
  color: #E7F0F6;
}

.page-home .support-wrap {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.8rem, 4vw, 3rem);
  align-items: start;
}

.page-home .support .section-title {
  color: #FFFFFF;
}

.page-home .support .section-lede {
  color: rgba(231, 240, 246, .8);
}

.page-home .support .legend-tag {
  color: var(--lake-300);
}

.page-home .support-lead .btn {
  margin-top: .5rem;
}

.page-home .support-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: rgba(156, 207, 227, .22);
  border: 1px solid rgba(156, 207, 227, .22);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-home .support-item {
  padding: 1.25rem 1.35rem 1.35rem;
  background: rgba(11, 27, 43, .6);
}

.page-home .support-num {
  font-family: var(--font-mono);
  font-size: .8125rem;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-home .support-title {
  margin: .55rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  color: #FFFFFF;
}

.page-home .support-text {
  margin: .5rem 0 0;
  font-size: .9rem;
  line-height: 1.72;
  color: rgba(231, 240, 246, .8);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-home .fact {
    padding: .6rem 0;
  }

  .page-home .lines-banner {
    margin-bottom: 2.4rem;
  }

  .page-home .tools-layout {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-home .tool-card--primary {
    grid-column: 1 / -1;
  }

  .page-home .support-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-home .hero-wrap {
    grid-template-columns: 5fr 7fr;
    gap: clamp(2rem, 3.5vw, 3.25rem);
  }

  .page-home .hero-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 1.5rem;
  }

  .page-home .lines-layout {
    grid-template-columns: 5fr 7fr;
    align-items: start;
  }

  .page-home .steps-layout {
    grid-template-columns: 7fr 5fr;
    align-items: start;
  }

  .page-home .steps-phone {
    position: sticky;
    top: 6rem;
  }

  .page-home .support-wrap {
    grid-template-columns: 5fr 7fr;
  }

  .page-home .tools-layout {
    grid-template-columns: 6fr 6fr;
    grid-auto-rows: min-content;
  }

  .page-home .tool-card--primary {
    grid-column: 1 / 2;
    grid-row: 1 / span 2;
    align-self: stretch;
  }
}

@media (max-width: 420px) {
  .page-home .collage-version,
  .page-home .collage-entry {
    grid-column: 1 / -1;
  }

  .page-home .season-folds .fold-inner {
    padding-left: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-home .tool-card,
  .page-home .season-folds .fold-mark::before,
  .page-home .season-folds .fold-mark::after {
    transition: none;
  }

  .page-home .tool-card:hover {
    transform: none;
  }
}
<<<END>>>